Piston ring



my 1l 1924. 11,499,589 F. M. HOVVE PISTON RING Filed Nov. 30. 1921 Patente lJuly l, 194..

FRED IVI. HOWJE, OF WELLSBORO, PENNSYLVANIA.

` PISTON RING.

i Application filed November 30, 1921.

To all whom t may concern. l

Be it known that I, FRED M. HowE, a citizen of the United States, residing at Wellsboro, in the county of Tioga and State of Pennsylvania, have invented new and useful Piston Rings, of which the following is a specification.

This invention aims to provide a novel form of auxiliary ring, adapted to be placed between the main ring on the piston of an internal combustion engine and the piston. for the purpose of preventing oil from passing the main ring, and for the further purpose of pressing the main ring outwardly, so that it will have a firm bearing on the wall of the cylinder.

It is within the province of the-disclosure to improve generally and to enhance the utility of devices of that type to which the invention appertains.

With the above and other objects in view, which will appearas the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that, within the scope of what is claimed, changes in the precise embodiment of the invention shown can be made without departing from the spirit of the invention.

In the drawings z- Figure 1 shows in longitudial section, a portion of the piston of an internal combustion engine equipped with the device constructed in accordance with the invention; Figure 2 is a cross section on the line 2-2 of Figure 1; Figure 3 is fragmental plan showing a portion of the blank out of which the auxiliary ring is formed; Figure 4 is a cross section showing a modification; Figure 5 is a cross section showing a further modification; Figure 6 is a fragmental elevation showing another modification; Figure 7 is cross section on the line 7 7 of Figure 6; Figure 8 isa cross section depicting another modification; Figure 9 is a cross section wherein a further modification is shown; Figure 10 is a cross section disclosing another modified form of the invention; Figure 11 is a cross section wherein a further modification appears; Figure 12 is a cross section delineating another modification; Fi re 13 is a cross section showing a modi ed form of the invention.

Serial No. 518,932.

Referring to Figures 1, 2 and 3, the numeral 2 denotes the piston of an internal combustion engine, the piston having a groove 3 wherein a main ring 4 is seated, the construction being common and well understood.

A resilientauxiliary ring 5 is located in the groove 3' and is interposed between the main ring 4 and the piston 2, the auxiliary ring 5 being divided as indicated at 6.

The auxiliary'- ring 5 is fashioned from a resilient strip /7 preferably of metal, the strip being provided in its edges with inwardly extended slits 8 defining tongues 9. The strip 7 is bent along longitudinal lines 10 to rdefine a body 11, and to cause the tongues 9 to form fianges which extend outwardly, the body 11 bearing against the piston 2, as shown in Figure 1, and the outwardly extended resilient tongues 9 bearing against the main ring 3.. The construction is such that the passage of oil behind the main ring 4 will be rendered diflicult, and the main ring will be sustained in the position shown in Figure 1 to aord a secure engagement between the main ring and the wall of the cylinder wherein the piston 2 works.A

In Figure 4, the body appears at 12 and the flange-forming tongues at 14. In this form of the invention, the tongues 14 project inwardly and 'engage the piston 2 whereas, the body 12 cooperates with the ring 4. 'In Figure 5, the body is shown at 15, and is provided along one edge with inwardly extended flange-forming tongues 16 adapted to cooperate with the body being provided along its opposite edge with outwardly extended flange-forming tongues 17 adapted to cooperate with the main ring.

In Figures 6 and 7 the body is shown at 18 andpis provided on one edge with fiangeforming tongues 19 which project inwardly, as shown in Figure 7, the body 18 cooperating with the main ring, and the tongues 19 cooperating with the piston.

In Figure 8, the body is shown at 20, and is provided along one edge with flange-forming tongues 21, the body being adapted to cooperate with the piston, whereas the tongues 21 engage the main ring.

In Figure 9, the body appears at 22 and is provided along one edge with fiangeforming tongues 23 being disposed at the opposite edgehof the body, from the disclosure in Figure 8. The tongues 23 bear against the piston, the body 22 engaging the Iil Figure 10, the body is shown at 24, and is provided along both of its edges with flange-forming tongues, denoted by the numerals 25 and 26, the tongues engaging the piston, whereas the body 24 cooperates with the main piston ring.

In Figure 11, the body is shown at 27 and is supplied along one edge with inwardly inclined flange-forming tongues 28, the body being provided along its opposite edge With inwardly inclined flange-forming tongues 29, the tongues 28 bearing against the piston, and the tongues 29 bearing against the main ring.

In Figure 12, the body of the auxiliary ring is marked by the numeral 30 and is provided along its edges with outwardly projecting flange-forming tongues 31 and 32. The body 30 cooperates with the piston,

Whereas the tongues 31 and 32 enga-ge the main piston ring.

In Figure 13, the body is denoted by the numeral 50, and is provided alon one edge with a flange 51, the constructioneing that delineated in Figure 7, aside from the fact that the flange 51 is not slit to form tongues. In this connection it is' to be observed that, if desired, the slits may be omitted in the other forms of the invention.

IVhat is claimed is An auxiliary piston ring or piston ring expander, comprising a strip of spring metal having transversely extendmg edge tongues disposed at an angle to the body.

In testimony that I claim the foregoing as my own, I have hereto affixed my s1gnature in the presence of two witnesses.

FRED M. HOWE.

Witnesses:

EMORY B. RooKwELL, KERsLEv L. WILSON. 

